The present disclosure relates to a seeder, configured to deposit seeds in trays or substrate in a pattern of seed positions, comprising: 5 - a seed supply； - a conveyor configured to extract seeds from the seed supply With the seeds organized in the pattern of seed positions and release extracted seeds into the trays or substrate, - at least one detector configured to determine Whether the conveyor has not extracted a seed at any of the seed positions in the pattern and generate a corresponding detection signal； and 10 - a filler configured to, based on the detection signal, augment seeds in the trays or substrate at seed positions Without seeds. Also the disclosure relates to an associated method and a computer-readable storage medium to carry a program for carrying out the method. 15 REPRESENTATIVE FIGURE FOR PUBLICATION PURPOSES: Figure 1
